Printing mechanism



NTOR-A MM Jan. 2E, 1934;a G. TAUSCHEK PRINTING MECHANISM Filed July so,1929 w54. 2@ m01. 60 W82 @9 mais llll 1| 62 862 83 783 .a9 @als 7 5 7 5050 37.0 70 7.82 SZ 'sul 34| Patented Jan. 23, 1934 Linus l PATENT OFFICEPRINTING MECHANISM Gustav Tauschek, Vienna, Austria, assignor, by mesneassignments, to International Business Machines Corporation, New York,N. Y., a corporation of New York Application July-30, 1929, Serial No.382,215, and in Austria August 23, 1928 Claims. `(Cl. 235-58) Myinvention relates to printing mechanisms such as are used for tabulatingmachines, calculating machines and the like and has particular referenceto the construction of the printing 5, mechanism in such a manner, thatthe printed letters or numbers appear subdivided into columns by linesdrawn to correspond to the character of the letters or numbers.

This result is lobtained according to the inl, vention by providingruling members at the printing mechanism which cooperate with the otherelements of the printing mechanism and which may selectively be actuatedto' draw lines for the purpose of subdividing the printed letters ornumbers in columns.

obvious in connection with calculating machines and tabulating machineshaving a subdivided, countingand printing mechanism, as by means l 2 o!the invention it is possible to provide a clearly at the points o!subdivision.

device. wherein it has been assumed that the machine is provided with atwenty-digit-printing mechanism and the numbers are to beprinted incolumns each containing four digits. As will be seen from Figure 1 aclearly arranged separation of the columns is obtained by means of thedevice according to the invention andyet all printing digits may beused, whereas, if the subdivisions o! the columns are made clearlyvisible by separating the numbers from each other. fourprintingdigitsarelostas'showninFigure 2. sothatin the same space onlyfour instead o! live columns may be provided. Figure 3 is a perspectiveof the device according to the invention; Figure 4 shows a sideelevation of same and Figure 5 illustrates a detail.

Associated with each type carrier 1 is a hammer 2 pivotally arrangedupon the shaft 3 and controlled by a spring 4. Each hammer 2 is providedwith a nose or projection 2a cooperating with a rail 5 to hold thehammer in the position of rest. In the movement of printing the hammeris released, so that tbe type may be struck against the inking ribbon 6and the platen 'l arranged behind the ribbon and serving to carry thepaper web 7a. After striking the type. the hammers are returned to theiroriginal position by means of a tension rail 8. Associated with theseusual elements of the printing mechanism are other hammers 9 one foreach digit of the printing mecha-y nism. These hammers also are underthe influence of the springs 4 and are pivotally arranged upon the shaft3. The head 9a of each of these hammers 9 is enlarged and shaped tocorrespond 30 to the curvature of the platenl 7. 'Ihe heads 9a are, aswill be seen from Figure 5, serrated and extend between each twoadjacent type carriers, so that they may be struck against the inkingribbon and the platen, to print dotted lines bee5 tween the numbersprinted by adjacent types.

In contradistinction to the hammers 2 each hammer 9 is provided with twonoses. One of these noses is arranged in a manner analogous y to thearrangement of the noses 2a of the ham- 70 The advantage of theinventionis particularly mers 2 and extends into the path of the holdingwhile the second nose 10 is arranged opposite-to a pawl 11 provided witha handle 13. All thepawls 1l are pivotally arranged upon a sharing. eachpawl 11 may individually be u arranged subdivision of the printednumbers in columns. without it being necessary to sacri-1 ilce printingdigits of the printing mechanism moved in any manner. for instance, byhand. By lectiveengagementor disengagement of a pawl 11,-the movement orthe corresponding hammer 9 and therefore the rulin'g'action of the samemay be prevented or this hammer 9 may be released so to print asubdivision line upon the paper web "la.

The adjustment of the pawl 11 may, o! course, also be eiected in oneoperation with the adiustments necesssary for the subdivision of thecountingand printing mechanism. For this purg5 pose the pawl 11 may, forinstance. be vmechanically connected to the tens transfer elements oithe corresponding digits of the counting mechanism in such a manner,that, simultaneously with a movement of the pawl 11 to release the nose90 10, the tens transfer elements are made inei- Iective. In countingmechanisms having electrical tens transfer means a contact, interruptingthe circuit of the tens transfer means, may be opened, for instance, bythe shifting of the pawl 11.

' One form of electrical transfer mechanism which may be combined withthe present invention is illustrated in the British patent to Tauschek289055, the details of winch are shown in Fig. 3.

Of course, the printing eliect of the ruling members may be obtained inanother manner than by the striking of hammers against an inking ribbon.Instead of the hammers 9 any other 105 ink supplying-devices. forinstance, ruling pens, pencil mines, ink blowing devices and the like,may be used.

What I claim is:

1. In a tabulating or like machine, electrical tens transfer devicesbetween adiacent accumulator elements, line printing members betweendenominational printing elements, electrical contacts for controllingthe related order of said transfer devices and a single meansselectively shifted to operate said contacts to disable the relatedtransfer device and to cause the selection of the related line printingmember for a printing operation. f

2. In combination, an electrical transfer mechanism for an accumulatorincluding a series of electrical contacts, each for controlling a pointof split, a series of line printing members. and a plurality of singlemeans one for each denominational order and each for rendering a lineprinting member enective and concomitantly opening the relatedelectrical contacts at the point of split. A

3. In a computing machine, a pivoted line printing member arrangedintermediate printing bars of a printing machanism, a member havingconnections for restraining the pivotal movement of the line printingmember, and a transfer mechanism having electric contacts forcontrolling the transfer devices between successive denominationalorders, said restraining member having means adapted when shifted tocause the opening of said contacts and the release of the line print ingmember.

4. In a computing machine, a transfer mechanism including electricalcontacts comprising a transfer split device, a related line printingmember normally restrained against movement. and a single memberadapted, in one position, to cause the line printing member to berestrained and said contacts closed, and in an alternate position tocause the releasing of the line printing member lll lll

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